Semiconductor connection substrate

ABSTRACT

A semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate, a plurality of electrodes having different areas provided on the insulator substrate, one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element, a metal wiring connecting the elements, a metal terminal part of part of the metal wiring and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion.

FIELD OF THE INVENTION

The present invention relates to an electronic part and a manufacturing method thereof. In particular, the present invention relates to a technology which is effective when applied to an electronic part having glass as the substrate and a corresponding manufacturing method.

BACKGROUND ART

JP-A-8-255981 discloses a technology in which an exposing process for a photo sensitive material with ultraviolet light is used to form microscopic via holes and wirings on a glass substrate. By forming a light shielding film of a metal such as Ti, Cr, Al, Ni, W, Mo, Ta and Cu on the glass substrate, multiple reflection of ultraviolet light between the upper and lower faces of the glass substrate is prevented at the time of the exposing process of the photo sensitive material. Further, by forming a light shielding film composed of one of the above metals having a thickness of more than 3 μm, the heat conductivity of the glass substrate is enhanced.

JP-A-9-321184 discloses a connection substrate for connecting a semiconductor chip having a high wiring density with a printed wire substrate having a low wiring density and a manufacturing method thereof. The connection substrate is composed of a photosensitive glass substrate and on the upper face thereof one layer of wiring is formed to which a bump for the chip is connected. Further, on the lower face of the substrate a plurality of bumps are formed, which are connected to electrodes on the printed wire substrate. The wirings on the upper face of the substrate and the bumps on the lower face are electrically connected through holes penetrating between the upper and lower faces of the substrate. These penetrating holes are formed through a photolithography and conductors are buried inside the penetrating holes through plating.

JP-A-2000-124358 discloses a high frequency integrated circuit mounting an active element in which an MIM type capacitor, a spiral inductor, a thin film resistor and metal wirings for connecting these are arranged on a silicon substrate and further, a flip chip is mounted thereon. Further, the claims thereof cover the use of a glass substrate, although the details thereof and the advantages thereof are not disclosed.

JP-A-10-284694 discloses a an electronic circuit on a poly crystal silicon substrate having a resistivity of more than 200 Ωcm.

As the wiring substrate for mounting electronic parts, one in which Cu wirings are formed on a resin substrate such as epoxy resin containing glass fibers (glass epoxy) or polyimide resin, or one in which W wirings are formed on a ceramics substrate such as AlN and SiC are broadly used.

However, the warp and size variation of wiring materials such as the resin and the ceramics are large in comparison with-those of silicon substrate which is used in the manufacture of the semiconductor integrated circuits, and the formation of microscopic wirings and through holes of the order of μm by using a photolithography is impossible. Therefore, it is difficult to mount the electronic parts in high density.

On the other hand, the suitability of a silicon substrate as the wiring substrate for mounting electronics parts, is low in comparison with a glass epoxy substrate, and thus its usage is limited. Further, since the single crystal silicon substrate is a semiconductor, the substrate operates to reduce the efficiency of the electronic parts such as a capacitor and inductor formed thereon. On the other hand, a poly crystal silicon substrate can prevent to some extent the efficiency reduction. However, the poly crystal silicon substrate is more expensive than the single crystal silicon and the general use property thereof as the wiring substrate for mounting electronic parts is low and the usage thereof is limited.

Since glass shows characteristics that the warp and the size variation are small in comparison with resin and ceramics and the cost thereof is inexpensive in comparison with silicon, it is considered that glass is a suitable substrate material for mounting electronic parts in high density. Further, the glass substrate is a desirable insulator, therefore the elements such as the inductors formed thereon show a high efficiency.

However, since the heat conductivity of the ordinal glass substrate as disclosed on JP-A-2000-124358 is low and is readily broken, cracks and damages are frequently caused due to difference of the thermal expansion coefficients between the glass substrate and other materials (Si). As a result, yield and reliability are reduced.

Further, in order to mount electronic parts on the glass substrate in high density as well as to use the glass substrate in a broad usage, it is necessary to lead out electrodes to be used as external connection terminals from the back face of the substrate (the opposite side from the mounting face of the electronic parts) as practiced in a wiring substrate composed of resin or ceramics.

In order to lead out the external connection terminals from the back face of the substrate, it is necessary to form through holes in the glass substrate in high accuracy; however, if a special photosensitive glass such as, for example, the glass disclosed in JP-A-9-321184 is used, the manufacturing cost of the substrate increases and its usage is limited as the substrate for mounting the electronic parts.

Further, as disclosed in JP-A-2000-124358, when all of the variety of the electronic parts such as the capacitor, inductor and resistor are arranged on the substrate, the size of the integrated electronic parts become comparatively large.

Further, in the above document, the respective constituting elements formed on the glass substrate are structured to be exposed at the end face of the substrate. When a large mechanical stress is applied at the interface regions of the respective layers constituting the semiconductor connection substrate, such as at the time of cutting out by dicing from a glass substrate larger than the electronic part, and when a large thermal stress is applied at the interfaces of the respective layers in connection with sudden temperature variation caused at the time of mounting the semiconductor connection substrate, these stresses are concentrated at the exposed end faces of the semiconductor connection substrate and the interface regions of the respective layers. As a result, the interface regions of the respective layers may be peeled off and the semiconductor connection substrate may be damaged.

Accordingly, these already known semiconductor connection substrates do not necessarily show a high reliability, and it is not necessarily easy to obtain a high manufacturing yield.

An object of the present invention is to provide a semiconductor connection substrate, which integrates a variety of electronic parts, such as a capacitor, inductor and resistor, wherein the electronic parts have a high performance and are present in a high density.

SUMMARY OF THE INVENTION

This and other objects of the invention are achieved by a semiconductor connection substrate which connects a semiconductor element to a mounting substrate, such as a printed substrate. The semiconductor connection substrate comprises an insulator substrate; a plurality of electrodes having different areas provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; a metal terminal part of the metal wiring; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield and permits to integrate in a high density integration of a variety of electronic parts, such as a capacitor, inductor and resistor.

In another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate, such as a printed substrate, comprises an insulator substrate; a plurality of electrodes provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a connecting portion provided at portions other than end portions of the electrodes; a metal wiring connecting the elements and the connecting portion; a metal terminal part of the metal wiring; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield and permits high density integration of a variety of electronic parts such as a capacitor, inductor and resistor.

In yet another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate; a plurality of electrodes provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; a metal terminal part of the metal wiring arranged in a grid shape; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield, high density integration of a variety of electronic parts such as a capacitor, inductor and resistor, and allows easier connection with other parts such as a connection substrate.

In still another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate; a plurality of electrodes provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element, a metal wiring connecting the elements; a metal terminal part of the metal wiring; and a plurality of organic insulator materials covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield and permits high density integration with high performance for a variety of electronic parts such as a capacitor, inductor and resistor, through selection of organic insulator materials suitable for the necessary high frequency characteristics of the respective elements.

In another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate having through holes at predetermined positions; a plurality of electrodes having different areas provided on one or both of the main face and the sub-main face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal part of the metal wiring; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate—shows a desirable manufacturing yield and permits high density integration of a variety of electronic parts such as a capacitor, inductor and resistor.

In yet another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate having through holes at predetermined positions; a plurality of electrodes having different areas provided on one or both of the main face and the sub-main face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; connecting portions provided at portions other than end portions of the electrodes; a metal wiring connecting the elements and the connecting portions; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal part of the metal wiring; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield and permits high density integration of a variety of electronic parts such as a capacitor, inductor and resistor.

In still another embodiment a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate at having through holes at predetermined positions; a plurality of electrodes having different areas provided on one or both of the main face and the sub-main face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal part of the metal wiring arranged in a grid shape; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield and permits high density integration of a variety of electronic parts such as a capacitor, inductor and resistor and easier connection with other parts such as a connection substrate

In another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on one or both of the main face and the sub-main face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal part of the metal wiring; and a plurality of organic insulator materials covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield and permits high density integration with high performance for a variety of electronic parts such as a capacitor, inductor and resistor, through selection of organic insulator materials suitable for the necessary frequency characteristics of the respective elements.

In yet another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on one or both of the main face and the sub-main face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal part of the metal wiring; a first organic insulator material covering the elements provided on the main face of the insulator substrate and the circumference of the metal wiring portion excluding the metal terminal portion; and a second organic insulator material covering the elements provided on the sub-main of the insulator substrate and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield and permits high density integration with high performance for a variety of electronic parts such as a capacitor, inductor and resistor, through selection of organic insulator materials suitable for the necessary frequency characteristics of the respective elements.

In still another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on one or both of the main face and the sub-main face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal part of the metal wiring provided on the face opposite where the inductor element is provided; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion. The above semiconductor connection substrate shows a desirable manufacturing yield, reduces an influence to the inductor element from electronic parts mounted on the substrate and permits high density integration with high performance for a variety of electronic parts such as a capacitor, inductor and resistor.

In another embodiment, a semiconductor connection substrate which connects a semiconductor element to a mounting substrate such as a printed substrate comprises an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on one or both of the main face and the sub-main face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the elements; conductor portions constituted of a conductive material, core forming material and glass and formed inside the through holes for electrically connecting the metal wiring; a metal terminal part of a part of the metal wiring; and an organic insulator material covering the elements and the circumference of the metal wiring portion excluding the metal terminal portion; The above semiconductor connection substrate shows a desirable manufacturing yield, ensures electrical conduction between both faces of the substrate and permits high density integration with high performance for a variety of electronic parts such as a capacitor, inductor and resistor.

In various embodiments, the distances between the electrodes in the capacitor element, the inductor element and the resistor element with respect to the insulator substrate are differentiated which allows the capacitor, inductor and resistor elements to be integrated in a further high density.

In still other embodiments, through the use of the glass substrate for the insulator substrate, a further low cost and high performance semiconductor connection substrate can be obtained because of the low cost, high flatness, high insulation property and low dielectric loss tangent of the glass substrate. Still further, through the use of photosensitive organic insulation material for the organic insulator, a further low cost semiconductor connection substrate can be obtained because the number of the process steps during the manufacture is reduced and the manufacturing cost thereof is reduced.

In other embodiments, when the organic insulator is a low dielectric loss tangent resin composition which includes a bridging component having a plurality of styrene groups as expressed by the following general chemical formula and contains polymers having average molecular weight of more than 5000, a further high performance and high efficiency semiconductor connection substrate can be obtained with a low cost because of the low cost, low dielectric constant and low dielectric loss tangent of the low dielectric loss tangent resin compositions.

(Wherein, R represents a hydrocarbon skeleton, which may include a substituent, R1 represents one of hydrogen, methyl and ethyl, m represents 1 from 4 and n represents an integer more than 1).

Still further, when the organic insulator is polyimide resin, a highly reliable semiconductor connection substrate can be obtained because of high thermal stability of polyimide.

Further, when the organic insulator is BCB (Benzo Cyclo Butene), a further high performance and high efficiency semiconductor connection substrate can be obtained because of low dielectric constant and low dielectric loss tangent of BCB.

Further, when the dielectric material is an oxide of any of Ta, Mg and Sr, a low cost, high reliability and high performance semiconductor connection substrate can be obtained because of low cost and high stability property of Ta, Mg and Sr. Additionally, when the oxide of Ta is used for the dielectric material, the dielectric strength thereof can be enhanced, when the oxide of Mg is used, Q value can be enhanced and when the oxide of Sr is used, a high ∈ can be obtained. The Q value represents a sharpness of resonance (frequency selectivity) and is defined according to the following equation; Q=ω(accumulated energy)/(loss)=Im(Z)/Re(Z) wherein Im(Z) and Re(Z) are impedances in an imaginary part and real part one port (a terminal pair) of the respective elements.

The capacitor elements of the present invention are constituted by one or more capacitor elements having a structure in which an inorganic dielectric material is sandwiched by two metal electrodes and one or more capacitor elements having a structure in which an organic dielectric material is sandwiched by two electrodes. Further, the end portion of the metal electrode adjacent the glass substrate of the capacitor element is preferably covered by an insulator other than the dielectric material. Further, when the electrode of the capacitor element and the inductor element are formed on a same layer, the distance between the capacitor element and the inductor element can be reduced, which is effective for size and noise reduction and high efficiency and high performance. Further, when the capacitor element is arranged in the region of the inductor element, the distance between the inductor element and the capacitor element can be shortened and the area occupied by the capacitor element on the electronic connection substrate is saved, which is effective for size reduction and high integration.

The metal electrode is preferably a low electrical resistance conductive material. More specifically, gold, copper, nickel, aluminum, platinum, tungsten, molybdenum, iron, niobium, titanium, nickel/chromium alloy, iron/nickel/chromium alloy and tantalum nitride are enumerated for the material. In particular, copper is preferable because of its low electric resistance. Further, the surface of the metal electrode should be flat and the unevenness of the surface is preferable to be below 1/25 of the thickness of the dielectric body. Further, when a metal having a high melting point is used for a lower electrode, a laser processing or a high temperature burning can be applied during the dielectric layer formation and a high performance (due to applicability of a high ∈ dielectric material) and an enhancement of manufacturing yield can be realized The metal electrode can be formed by forming the conductive material in a film having a predetermined film thickness, forming a resist pattern and forming the electrode by dry or wet etching. Alternatively, after forming the resist pattern, the electrode can be formed by electro or electro less plating. With regard to forming methods of the metal electrodes and other wirings, when a plating method is used, a resistance reduction, high efficiency and high performance can be achieved, because a thick film wiring can be realized. Further, when a sputtering method is used, size reduction and high performance can be achieved, because a formation of a minute pattern can be realized.

The inorganic material is not limited, if the material is used commonly as a capacitor use dielectric material, for example, oxides of Ta, Mg and Sr are enumerated. Specifically, other than oxides such as Ta2O5, BST(Ba(x)Sr(1−x)TiO(3), 0<x<1), SrTiO3, TiO2, MnO2, Y2O3, SnO2 and MgTiO3, barium titanium oxide, compound formed by doping zirconium and tin into barium titanium oxide, WO3, SrO, mixed barium/strontium oxide, BaWO4, and CeO2 are enumerated. The method of forming the dielectric layer is not limited and a sputtering method, a dry method such as plasma CVD method and a wet method such as anodic oxidation method can be used. A dielectric layer formation with dry method such as sputtering method and etching method enables a minute pattern, which is effective for minuting, size reduction and high performance. Further, a dielectric layer formation with wet methods such as sol-gel method and anodic oxidation method can simplify the processing steps, which is effective for reducing the cost.

Further, the organic material is not limited, if such is an organic material commonly used for semiconductor whether such is thermo setting or thermo plastic. For example, polyimide, polycarbonate, polyester, poly tetra fluoro ethylene, polystylene, polypropylene, poly vinylidene fluoride, cellulose acetate, polysulfone, polyacrylonitrile, polyamide, polyamideimide, epoxy, maleimide, phenol, isocyanate, polyolefin, polyurethane and compounds thereof can be used. Alternatively, a mixture can be formed by adding a rubber component such as acrylic rubber silicone rubber and nitrylbutadiene rubber, an organic compound filler such as polyimide filler and an inorganic filler such as silica to any of the above compounds. Further, the organic material can be formed by a photosensitive material containing any of the compounds above. When a photosensitive insulator material is used, the process of forming a resist on the insulator material can be eliminated, thereby, the manufacturing yield can be enhanced. Further, a microfabrication is enabled, which can realize size reduction.

In particular, polyimide resin is preferable because of We its excellent heat resistance and chemical resistance, and further, the polyimide provided with photosensitivity is preferable because of its excellent workability. Further, benzo cyclo butene is preferable because of its low dielectric loss tangent, when the capacitor of the present invention is used for a high frequency parts. Likely, resin composition having low dielectric loss tangent as expressed by the following general chemical formula which includes a bridging component having a plurality of styrene groups and further, includes polymers having weight average molecular weight of more than 5000 is also preferable, because the transmission loss can be reduced. For skeletons connecting the styrene groups of the above resin composition, hydrocarbon skeletons containing alkylene groups such as methylene and ethylene are preferred. Specifically, 1,2-bis (p-biphenyl) ethane 1,2-bis (m-biphenyl) ethane and their equivalents, homopolymer of divinyl benzene having vinyl group at the side chains and oligomers of copolymers such as with styrene are enumerated.

(Wherein, R represents a hydrocarbon skeleton, which may include a substituent, R1 represents one of hydrogen, methyl and ethyl, m represents 1 from 4 and n represents an integer more than 1).

Further, a function as a stress absorber can be provided for the above organic insulator material. Specifically, fluoro rubber silicone rubber, fluoro silicone rubber, aklyle rubber, hydronitryl rubber, ethylene propylene rubber, chloro sulfonated polyethylene, epichlorhydline rubber, butyl rubber, urethane rubber, polycarbonate/aklylonitril butadiene styrene alloy, polysiloxane dimethylene terephthalate/polyethylene terephthalate copolymer polybutylene terephthalate/polycarbonate alloy, polytetrafluoroethylene, florinated ethylene propylene, polyarylate, polyamide/aklylonitril butadiene styrene alloy, denaturated epoxy, denaturated polyolefin and siloxane denaturated poly amideimide can be enumerated.

As the formation methods thereof include a pattern printing method such as a printing method, an ink jet method and an electro photography method, a method such as a film pasting method and spin coating method in which after forming organic insulation material, patterns are formed such as by photo process and laser and combination thereof. Other than the above, a variety of thermosetting resins such as epoxy resin, unsaturated polyester resin, epoxy isocyanate resin, maleimide resin, maleimide epoxy resin, cyanic acid ester resin, cyanic acid ester epoxy resin, cyanic acid ester maleimide resin, phenol resin, diallyl phthalate resin, urethane resin, cyanamide resin and maleimide cyanamide resin, materials formed by combining two or more resins above and materials mixing inorganic filler therein can be used. Further, by providing a photosensitivity to the above resin and through a predetermined exposure and developing process the shape of the stress buffering layer can be controlled. Further, as the organic insulators, different insulation materials can be used between layers. When different insulation materials are used between layers, a proper material depending on the required property for the particular portion such as low loss and chemical resistance can be selected, which help to achieve high performance. Further, when organic insulators are formed on both sides of the insulator substrate while sandwiching the same, if different organic materials are used, the same advantage as above can be obtained.

The inductor element of the present invention is not in particular limited, if the same is an inductive circuit element, for example, such as a spiral type formed on a plane, one formed by laminating the spiral type, and a solenoid type can be used. Further, the inductance thereof is preferable to be in a range of 10 nH/ mm2˜100 nH/mm2.

Further, the inductor element and the metal wiring can be either a same material or different material and the material therefor is selected properly according to electrical conductivity, adhesive property with the surrounding materials and formation method. Further, the formation method therefor is not in particular limited. For example, Cu film can be formed by making use of sputtering method and Ti and Cr films can be formed at the interface thereof in view of adhesive property with the surrounding materials. Further, after forming a thin film operating as a seed film with Cu through sputtering method, the inductor element can be formed by electrolytic plating. Further, as patterning methods of the wiring and the inductor element, common wire patterning methods such as etching method and lift off method can be used. Further, the wiring and the inductor element can also be formed through printing method by making use of resin paste containing metal such as Ag. Still further, when the forming temperature of the inorganic dielectric layer is high, a metal having oxidation resistant and heat resistant property such as Pt can be used. When forming the inductor, if the distance between the wirings constituting the inductor is shortened with respect to the wiring width of the inductor, the space at the center portion of the inductor can be enlarged, which enhances efficiency and performance thereof.

The resistance element of the present invention is structured by sandwiching a resistance material between two metal electrodes and the resistance material is not limited in particular, if a common resistor material is used therefor, and for example, CrSi and TiN can be used therefor. The formation method therefor is also not limited in particular and for example, sputtering method and plasma CVD method can be used. Further, because the resistance element is formed at the lowest layer, the burning thereof at a higher temperature than the curing temperature of the insulation material is permitted, which is effective for enhancing the manufacturing yield and the cost reduction.

The insulator substrate of the present invention is not in particular limited, if the same does not reduce the efficiency of the respective elements and shows a high insulation property. Further, the glass substrate of the present invention is also not in particular limited, if the same does not reduce the efficiency of the respective elements and shows a high insulation property and is selected in view of strength and workability thereof. Specifically, glasses containing at least one rare earth element selected among the group including Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu are in particular preferable. Further, it is preferable that the rare earth element is contained in a range of 0.5˜20 weight % with respect to the entire glass components when converted based on oxide of Ln2O3 (Ln is a rare earth element) and as the other components it is preferable that SiO2:40˜80 weight %, B2O3:0˜20 weight %, R2O (R2 is alkali metal): 0˜20 Weight %, RO (R is alkaline earth metal):0˜20 weight % and Al2O3:0˜17 weight % are contained, and it is preferable that R2O+RO are contained in an amount of 10˜30 weight %, thereby, the strength of the glass substrate is greatly enhanced and the workability is significantly improved.

With regard to the configuration of the through holes of the present invention, it is preferable to satisfy the following relationship between the two opening diameters R1 and R2 of the through holes and the thickness t of the glass substrate; 70≦ . . . tan⁻¹(t(R 1−R 2))≦ . . . 80 wherein, the opening diameters R1 and R2, the arrangement thereof and the thickness of the substrate can be properly selected depending on the sizes of the elements and wirings to be mounted or integrated.

Further, the forming method thereof is not limited, if the same does not cause any large physical or chemical damage on the glass substrate. Any already known boring technology can be applied. For example, micro sand blasting method, chemical etching method, laser processing method and photosensitive processing method using photosensitive glass are enumerated. Regardless to the method used, it is important that the method used does not cause any physical or chemical damages such as chippings and cracks at the opening portions and the inside of the through holes as referred to the above.

Further, even if physical or chemical damages such as chippings and cracks are caused with any of the above through hole forming methods, such can be recovered and the substrate can be used. For the recovering, a method of removing the damages by etching with hydrofluoric acid of the glass surface where the chippings or cracks are caused, a method of burying such as cracks with sol-gel liquid of the glass and a method of performing a heat treatment near at the softening point of the glass substrate material are enumerated. Of course, the methods are not limited to the above, if the method can remove or seal the damages.

Further, the conductive portions of the present invention formed inside the through holes provided at the insulator substrate is not in particular limited, if such can electrically connect the metal wirings and the elements provided on the main and sub-main faces of the substrate, for example, a conductive material constituted of a conductive material, core forming material and glass can be used. Further, such is not in particular limited, if the same can electrically connect the circuit portions on both sides of the glass substrate and is properly selected according to the electrical conductivity, adhesiveness with the circumference materials and the forming method thereof Further, the forming method thereof is not in particular limited. For example, a conductive layer of such as Cu can be formed on the walls of the through holes with sputtering method and in view of adhesiveness with the surrounding materials Ti or Cr can be formed at the interface thereof. Further, after forming a thin film of such as Cu serving as a seed film with sputtering method, the conductive layer can be formed with electrolytic plating method. Further, electroless plating method can also be used. Still further, a resin past containing a metal such as Ag can be buried inside the through holes.

The connecting portions of the present invention provided at portions other than the end portions of the electrodes are not in particular limited, if such are electrically connected with the upper metal wiring portions, after boring through holes at the organic insulator covering the electrodes with etching method, the connecting portions can be formed together with the upper wiring layers by plating. As another through hole forming method, the through holes can be formed with photo-mask method by using photosensitive organic insulator material such as photosensitive polyimide and BCB as the organic insulator.

The arrangement of the respective elements of the present invention is not in particular limited, however, it is necessary to design the arrangement of the respective elements in view of the performance reduction due to a parasitic capacity caused by coupling between the respective elements and an integration rate depending on the desired size of the semiconductor connection substrate.

For example, the semiconductor connection substrate does not require much size reduction, it is necessary to reduce an influence between the respective elements by arranging the respective elements on the same plane or to enlarge the distance between the layers. Further, a provision of a grounded plane, namely, a grounded layer is another method.

Further, if the size reduction is desired, through forming the respective elements on both sides of the substrate, the integration rate is increased and the size is further reduced.

In order to further reduce the size, when the respective elements are formed on multiple faces in a layer lamination structure, the size is further reduced.

Further, by arranging the respective elements separately, while sandwiching the glass substrate there between, the production process is simplified and a low cost semiconductor connecting substrate can be obtained. Further, since large distances between the respective elements can be ensured, and;increase of parasitic capacity due to the coupling can be prevented.

In the semiconductor connection substrate of the present invention, it is not necessarily required that the external electrodes for electrical connection with the externals are formed on the metal end portions, however, if necessary, such can be formed thereon.

The external electrode is a conductive body for electrically connecting with the substrate on which the semiconductor connection substrate of the present invention and the semiconductors, and specifically, a ball shaped body of solder alloy containing tin, zinc and lead, silver, copper, gold or one coated by gold are used. Further, other than the above an alloy formed by combining one or more of such as molybdenum, nickel, copper, platinum and titanium or a terminal having multi layered structure can be used. Further, as the forming method thereof, any conventional methods such as a method of transfer printing the ball shaped electrodes by using masks and a method of pattern printing can be used.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic cross sectional view representing first˜fourth embodiments of the present invention;

FIG. 2 is a schematic cross sectional view representing fifth embodiment of the present invention;

FIG. 3 is a schematic cross sectional view representing sixth embodiment of the present invention;

FIG. 4 is a view showing a capacitor element in the sixth embodiment of the present invention;

FIG. 5 is a schematic cross sectional view representing seventh embodiment of the present invention;

FIG. 6 is a schematic cross sectional view representing eighth embodiment of the present invention;

FIG. 7 is a schematic cross sectional view representing ninth embodiment of the present invention;

FIG. 8 is a schematic cross sectional view representing tenth embodiment of the present invention;

FIG. 9 is a schematic cross sectional view representing eleventh embodiment of the present invention;

FIG. 10 is a schematic cross sectional view representing twelfth embodiment of the present invention; and

FIG. 11 is a schematic cross sectional view representing thirteenth embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

Herein below, the present invention will be explained further specifically with reference to the embodiments. Further, in all the drawings for explaining the present invention, ones having the same functions are designated by the same reference numerals and repetitive explanation thereof is omitted.

(Embodiment 1)

FIG. 1 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 1, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 1, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000) is used therefor.

A capacitor element 3 formed inside the organic insulator 2 is in a three layer structure constituted by a lower electrode 3 a, a dielectric body 3 b and an upper electrode 3 c. The lower electrode 3 a is constituted by Cu, the dielectric body 3 b by oxide of Ta and the upper electrode 3 c by Cu.

An inductor element 4 is a spiral type inductor and is formed on the same plane as the upper electrode 3 c of the capacitor element 3 and the material thereof is Cu.

A resistor 5 is constituted by a resistance body 5 b and electrodes 5 a and 5 c. The resistance body 5 b is a compound of Ta and Ti and the electrodes 5 a and 5 c are composed of Cu.

In FIG. 1, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6. Further, 8 is another metal terminal portion used for connection with a semiconductor element.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 1 will be explained.

A Cr film of 50 nm was formed on a glass substrate of 0.5 mm thickness with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance the polyimide having an opening is hardened at 250° C./2 hours under nitrogen atmosphere and the organic insulator of 10 μm was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask the TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrode, electrodes for the resistors and the inductor were formed.

On the plane where the upper electrode, the electrodes for the resistor and the inductor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator of 10 μm was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

In order to form the metal terminal portion on the organic insulator surface the electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated and prebaked, thereafter, a resist mask for plating was formed through exposure and development then, a plating film of 10 Jim was formed by Cu electrolytic plating and further, an electrolytic nickel plating film of 2 μm was formed. Finally, after peeling off the resist and the electrolytic plating seed film, the wirings and the metal terminal portions were formed.

On the plane where the metal terminal portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

As has been explained above, by integrating the passive elements such as the inductors, capacitors and resistors, which were conventionally mounted in single parts, the mounting area can be halved and the size thereof is further reduced. Further, since a glass having a high insulation property is used for the substrate, a possible efficiency reduction of the respective elements can be prevented and efficiency of about five times in comparison with ones using the conventional silicon substrate can be obtained. Still further, the manufacturing cost is also halved in comparison with the ones using the conventional silicon substrate.

Still further, by forming the passive elements such as the capacitors, inductors and resistors at the inside from the end portion of the glass substrate, the structural portions where stresses concentratedly applied at the time of cutting out the semiconductor connection substrate and at the time of mounting the same are designed to withstand the stresses and a possible damage on the semiconductor connection substrate due to the applied stresses can be greatly reduced, thereby, a highly reliable semiconductor connection substrate of a desirable manufacturing yield can be obtained.

Further, the structure of FIG. 1 is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 2)

In embodiment 2, in place of the glass substrate 1 used in embodiment 1 in FIG. 1, the following glass substrate was used. The composition of the glass substrate of the present embodiment contains at least one rare earth element selected among the group including Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu in an amount of 0.5˜20 weight % with respect to the entire glass components when converted based on oxide of Ln2O3 (Ln is a rare earth element) and as the other components contains SiO2:40˜80 weight %, B2O3:0˜20 weight %, R2O (R2 is alkali metal):0˜20 weight %, RO (R is alkaline earth metal):0˜20 weight % and Al2O3:0˜17 weight %, and it is preferable that R2O+RO are contained in an amount of 10˜30 weight %. Further, the thickness thereof was 0.5 mm like embodiment 1.

Further, the portions other than the glass substrate 1 in the present embodiment are the same as those in embodiment 1.

Further, the manufacturing method of the semiconductor connection substrate of the present embodiment is the same as that of embodiment 1.

The bending resistances of the glass substrate (product of Nippon Electric Glass Co., Ltd.) used in embodiment 1 and of the glass substrate used in embodiment 2 were respectively 200 Mpa and 300 Mpa. The bending resistances were the values measured with a four point bending meter and the shape of the samples was 10 mm×36 mm×0.5 mm. As will be apparent from the above, the strength of the glass substrate used in embodiment 2 is about two times larger than that of the glass substrate in embodiment 1.

Accordingly, the semiconductor connection substrate of embodiment 2 shows a high reliability such as in connection with impact resistance.

Through the use of such glass substrate of embodiment, a further highly reliable semiconductor connection substrate in addition to the advantages in embodiment 1 ran be obtained.

(Embodiment 3)

In embodiment 3, in place of the photosensitive polyimide used in embodiment 1, BCB (product of Dow Chemical, Cycloten 4026) was used as the organic insulator 2.

Further, the portions other than the organic insulator 2 in the present embodiment are the same as those in embodiment 1.

Further, the manufacturing method of the semiconductor connection substrate of the present embodiment is the same as that of embodiment 1.

The dielectric constant and dielectric loss tangent of BCB are respectively 2.65 and 0.003, which are respectively smaller than 3.5 and 0.01 of the photosensitive polyimide.

Accordingly, by using BCB as a insulator layer which covers the circumference of the electronic parts, the conductive loss and dielectric loss are reduced, thereby, loss of signals, passing through the electronic parts can be reduced.

Through the use of BCB for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal passing loss in addition to the advantages in embodiment 1 can be obtained.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

(Embodiment 4)

In embodiment 4, in place of the photosensitive polyimide used in embodiment 1, the low dielectric loss tangent resin composition as shown in the above chemical formula which includes a bridging component having a plurality of styrene groups as expressed by the following general chemical formula and contains polymers having average molecular weight of more than 5000 was used as the organic insulator 2.

Further, the portions other than the organic insulator 2 in the present embodiment are the same as those in embodiment 1.

Further, the manufacturing method of the semiconductor connection substrate of the present embodiment is the same as that of embodiment 1 except for the formation method of the low dielectric loss tangent resin composition which will be explained below. The above low dielectric loss tangent resin composition was formed in the following manner. Three kinds of raw materials of synthesized 1,2-bis (vinyl phenyl) ethane of 30 weight parts, cyclic poly olefin (product of Nihon Zeon, Zeonex 480) of 70 weight parts and curing catalyst per hexyne 25B of 0.3 weight part were resolved in xylene solvent so as to assume the solid component to be of 38% to prepare a varnish. The varnish was coated by spin coating and baked on a hot plate under 120° C./2min, thereafter, a step curing under 200° C./5min was performed to form the insulator of 10 μm. On the insulator positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was spin-coated and dried, thereafter, through exposing and developing process a resist mask having an opening portion was formed so that the end of the opening portion comes inside the end portion of the lower electrode by 20 μm. Subsequently, the low dielectric loss tangent resin composition was dry etched by making use of CF4 and the dielectric body above the lower electrode was exposed. Finally, the resist was peeled off.

The dielectric constant and dielectric loss tangent of the low dielectric loss tangent resin composition are respectively 2.45 and 0.0015, which are respectively smaller than 3.5 and 0.002 of the photosensitive polyimide and likely smaller than 2.65 and 0.003 of BCB.

Further, the cost of the resin composition is 20000 yen/kg, which is inexpensive about 1/10 in comparison with BCB, which is 230000 yen/kg.

Accordingly, by using the low dielectric loss tangent resin composition as an insulator layer which covers the circumference of the electronic parts, the conductive loss and dielectric loss are reduced, thereby, loss of signals passing through the electronic circuits can be reduced with the low cost material.

Through the use of the low dielectric loss tangent resin composition for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a low cost semiconductor connection substrate having a small signal transmission loss in addition to the advantages in embodiment 1 can be obtained.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

(Embodiment 5)

FIG. 2 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 2, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 2, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000) is used therefor. Capacitor elements formed inside the organic insulator 2 are constituted by a capacitor 3 in a three layer structure constituted by a lower electrode 3 a of Cu, a dielectric body 3 b of oxide of Ta and an upper electrode 3 c of Cu and a capacitor 3′ in a three layer structure constituted by a lower electrode 3 ′a of Cu, a dielectric body 3 ′b of polyimide and an upper electrode 3 ′c of Cu.

An inductor element 4 is a spiral type inductor and is formed of Cu.

A resistor 5 is constituted by a resistance body 5 b and electrodes 5 a and 5 c. The resistance body 5 b is a compound of Ta and TI and the electrodes 5 a and 5 c are composed of Cu.

In FIG. 2, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6. Further, 8 is another metal terminal portion used for connection with a semiconductor element.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 2 will be explained.

A Cr film of 50 nm was formed on a glass substrate of 0.5 mm thickness with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode 3 a by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, a dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode 3 a was exposed. In this instance the polyimide having an opening is hardened at 250° C./2 hours under nitrogen atmosphere and the organic insulator of 10 μm was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates. The organic insulator above the lower electrode 3 ′a formed according to the above process is the dielectric body 3 b.

Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then a plurality of resistor elements were formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrode, electrodes for the resistors and the inductor were formed.

On the plane where the upper electrode, the electrodes for the resistor and the inductor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

In order to form the metal terminal portion on the organic insulator surface the electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated and prebaked, thereafter, a resist mask for plating was formed through exposure and development, then, a plating film of 10 μm was formed by Cu electrolytic plating and further, an electrolytic nickel plating film of 2 μm was formed. Finally, after peeling off the resist and the electrolytic plating seed film, the wirings and the metal terminal portions were formed.

On the plane where the metal terminal portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Cot Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator of 10 μm was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

In the present embodiment, through the use of the inorganic material having a high dielectric constant such as the oxide of Ta as well as the organic material having a low dielectric constant such as the polyimide as the dielectric body material, capacitors having a small capacitance can be formed accurately, which enhances reliability of the circuits and expands available capacitance range. Further, through the use of the same material for the dielectric body as the insulator material which covers the circumference of the elements, the semiconductor connection substrate can be manufactured in further simplified and low cost processes in addition to the advantages obtained in embodiment 1.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 2 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 6)

FIG. 3 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 3, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 3, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000) is used therefor.

Capacitor elements formed inside the organic insulator 2 are constituted by a capacitor 3 in a three layer structure constituted by a lower electrode 3 a of Cu, a dielectric body 3 b of oxide of Ta and an upper electrode 3 c of Cu and a capacitor 3′ in a three layer structure constituted by a lower electrode 3 ′a of Cu, a dielectric body 3 ′b of polyimide and an upper electrode 3 ′c of Cu. Further, on the upper electrodes connecting portions 9 for connecting the same with wirings on the upper layer are provided.

An inductor element 4 is a spiral type inductor and is formed of Cu.

A resistor 5 is constituted by a resistance body 5 b and electrodes 5 a and 5 c. The resistance body 5 b is a compound of Ta and TI and the electrodes 5 a and 5 c are composed of Cu.

In FIG. 3, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6. Further, 8 is another Metal terminal portion used for connection with a semiconductor element.

Further, FIG. 4 shows parts of the capacitor element in FIG. 3. In the capacitor in FIG. 4, the dielectric body 3 b is formed so as to cover the side faces of the lower electrode 3 c and a reduction of defects due to current leakage between the upper and lower electrodes is achieved. Since the area of the upper electrode is formed smaller than that of the lower electrode, the capacitance of the capacitor is determined based on the area of the upper electrode. For the connection between the upper electrode 3 c and the wirings on the upper layer, as shown in FIG. 4, from a portion other than the end portion of the upper electrode 3 c a wiring is lead out through a via hole in the organic insulator 2 to the upper layer to complete the connection. However, when the connection is performed by leading out the wiring from the side face of the upper electrode, the area of the led out portion of the wiring facing the lower electrode operates to form a part of the capacitance, therefore, when forming the capacitor, a high level of accuracy is required. In contrast, when the connecting portions 9 are used, the connecting portions do not affect the capacitance of the capacitor, thus, a highly accurate capacitor can be formed.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 3 will be explained.

A Cr film of 50 nm was formed on a glass substrate of 0.5 mm thickness with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode 3 a by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, a dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer 25 b was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode 3 a was exposed. In this instance, the polyimide layer was opened so that the end portion of the opening was located at the inner side from the end of the lower electrode by 20 μm. The polyimide is hardened at 250° C./2 hours under nitrogen atmosphere to form the organic insulator of 10 μm. The organic insulator above the lower electrode 3 ′a formed according to the above process is the dielectric body 3 b.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrodes were formed.

On the plane where the upper electrodes were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator. Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements wee formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the electrodes for the resistors were formed.

On the plane where the electrodes for the resistor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the inductor elements, wirings and metal terminal portions were formed.

On the plane where the metal terminal portions, inductor elements and wirings were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

In the present embodiment, since the capacitor elements, inductor elements and resistor elements are respectively arranged at a plurality of different distances from the surface of the glass substrate, the respective elements can be integrated in further high density, therefore, a further small sized semiconductor connection substrate can be obtained in addition to the advantages obtained in embodiments 1 and 5.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 3 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 7)

FIG. 5 is a cross sectional view of a semiconductor connection substrate representing an embodiment of the present invention. In the semiconductor connection substrate as shown in FIG. 5, an organic insulator 10 having a function of buffering stress is provided immediately below the metal terminal portion 6. For the organic insulator having the stress buffering function, a liquid polyimide material in which polyimide fine particles are dispersed (product of Hitachi Chemical Co., Ltd., GH-P500) was used. The constituting elements other than the above were the same as those in embodiment 6. The manufacturing method of the semiconductor connection substrate as shown in FIG. 5 will be explained.

A Cr film of 50 nm was formed on a glass substrate of 0.5 mm thickness with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, a dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance, the polyimide layer was opened so that the end portion of the opening was located at the inner side from the end of the lower electrode by 20 μm. The polyimide is hardened at 250° C./2 hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrodes were formed.

On the plane where the upper electrodes were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator. Then, a TaN film of 500 nm was formed with sputtering method. On the film, positive type liquid,state resist OFPR800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the electrodes for the resistors were formed.

On the plane where the electrodes for the resistor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the inductor elements and wirings were formed.

Thereafter, the liquid polyimide material GH-P 500 in which polyimide fine particles are dispersed (product of Hitachi Chemical Co., Ltd.) was print coated by using a mask, heated on a hot plate at 200° C./25 min and hardened in a constant temperature bath at 250° C./60 min to form the organic insulator having stress buffering function.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the wirings and metal end portions were formed.

On the plane where the wiring and metal end portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for solder balls were formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

In the present embodiment, since the organic insulator having stress buffering function is formed immediately below the metal terminal portion 9, when being connected to a mounting substrate such as a print substrate, a thermal stress applied to the metal terminal portion 9 and the solder ball 10 due to difference of thermal expansion coefficients between the semiconductor connection substrate and the mounting substrate can be relaxed. Thereby, a semiconductor connection substrate having excellent heart resistance cycle can be obtained in addition to the advantages obtained in embodiment 6.

Further, the organic insulator having stress buffering function may be formed immediately below the metal terminal portion 11.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 5 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 8)

FIG. 6 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 6, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 6, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd.,HD-6000) is used therefor. A capacitor element 3 formed inside the organic insulator 2 is in a three layer structure constituted by a lower electrode 3 a, a dielectric body 3 b and an upper electrode 3 c. The lower electrode 3 a is constituted of Cu, the dielectric body 3 b of oxide of Ta and the upper electrode 3 c of Cu.

An inductor element 4 is a spiral type inductor and is formed on the same plane as the upper electrode 3 c of the capacitor element 3 and the material thereof is Cu.

A resistor 5 is constituted by a resistance body 5 b and electrodes 5 a and 5 c. The resistance body 5 b is a compound of Ta and Ti and the electrodes 5 a and 5 c are composed by Cu.

In FIG. 6, 12 is another insulator using photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000).

Capacitor elements 13 formed inside the organic insulator 12 are in a three layer structure constituted by a lower electrode 13 a, a dielectric body 13 b and an upper electrode 13 c. The lower electrode 13 a is constituted of Cu, the dielectric body 13 b of oxide of Ta and the upper electrode 13 c of Cu.

An inductor element 14 is a spiral type inductor and is formed on the same plane as the upper electrode 13 c of the capacitor element 13 and the material thereof is Cu.

A resistor 15 is constituted by a resistance body 15 b and electrodes 15 a and 15 c. The resistance body 15 b is a compound of Ta and Ti and the electrodes 15 a and 15 c are composed of Cu.

In FIG. 6, the respective elements formed inside the organic insulators 2 and 12 are electrically connected via conductor portions filled in through holes 20 formed in the glass substrate so as to provide a predetermined functions.

In FIG. 6, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6. Further, 8 is another metal terminal portion used for connection with a semiconductor element.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 6 will be explained.

A sand blast use film resist material (product of Tokyo Ohka, Odale) of 100 μm was laminated on the glass substrate having thickness of 0.5 mm through exposure and development process and an etching use resist was formed. Subsequently, through holes were formed in the glass substrate with micro sand blasting method. Then, the resist film was peeled off, electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed on the surface of the glass substrate and walls of the via holes with sputtering method. Thereafter, on the Cu film, a plating use film resist (product of Hitachi Chemical Co., Ltd., HN 920) was laminated and a resist mask was formed through exposure and development, then, conductive layers were formed inside the via holes by Cu electrolytic plating Subsequently, the resist and the electrolytic plating seed film were peeled off.

A Cr film of 50 nm was formed on the main surface of a glass substrate sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance a covering portion of the polyimide was opened inside from the scribe area by 80 μm used for cutting into pieces as the semiconductor connection substrates. The polyimide was hardened at 250° C./2hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrode, electrodes for the resistors and the inductor element were formed.

On the plane where the upper electrode, the electrodes for the resistor and the inductor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for solder balls was formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

A Cr film of 50 nm was formed on the back surface of the glass substrate with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance the polyimide having an opening is hardened at 250° C./2 hours under nitrogen atmosphere and the organic insulator of 10 μm was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrode, electrodes for the resistors and the inductor element were formed.

On the plane where the upper electrode, the electrodes for the resistor and the inductor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator of 10 μm was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

In order to form the metal terminal portion on the organic insulator surface the electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated and prebaked, thereafter, a resist mask for plating was formed through exposure and development then, a plating film of 10 μm was formed by Cu electrolytic plating and further, an electrolytic nickel plating film of 2 μm was formed. Finally, after peeling off the resist and the electrolytic plating seed film, the wirings and the metal terminal portions were formed.

On the plane where the metal terminal portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

According to the present embodiment, in addition to the advantages obtained in embodiment 1, since the thin film passive elements were integrated on both surfaces of the glass substrate having the through holes, the integration rate was doubled in comparison with the conventional ones in which the elements were integrated on one face of the substrate, which further reduces the size of the semiconductor connection substrate.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 6 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 9)

FIG. 7 is a cross sectional view of a semiconductor connection substrate representing an embodiment of the present invention. In FIG. 7, 22 is a photosensitive glass substrate, 23 a through hole and 24 a conductive portion formed inside the through hole. Further, in FIG. 7, portions other than the photosensitive glass substrate 22, through hole 23 and conductive portion 24 are the same as those in embodiment 8.

Further, the manufacturing method of the semiconductor connection substrate as shown in FIG. 7 is the same as that of embodiment 8 except for the through hole formation method which will be explained below.

For the photosensitive glass substrate a photosensitive glass series of Li2-Al2O3-SiO2(Au,Ce) is used. On the main face of the photosensitive glass substrate a mask on which a through hole pattern was drawn by Cr was closely contacted and was exposed by using an Hg—Xe lamp. Thereafter, being developed and crystallized and a glass substrate having through holes were obtained.

When the photosensitive glass is used, the wall face of the through hole becomes more vertical, in other words, the taper angle thereof is enlarged in comparison with other through hole formation methods such as the sand blasting method, which permits formation of further fine through holes. Accordingly, in the present embodiment, the elements can be integrated in further high integration degree, thereby, an equivalent integration degree can be achieved with about halved area in comparison with embodiment 8.

As will be seen from the above, when the photosensitive glass substrate is used, a semiconductor connection substrate of a high integration degree can be obtained with a low cost.

Further, FIG. 7 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 10)

FIG. 8 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 8, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 8, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd.,HD-6000) is used therefor.

Capacitor elements formed inside the organic insulator 2 are constituted by a capacitor 3 in a three layer structure constituted by a lower electrode 3 a of Cu, a dielectric body 3 b of oxide of Ta and an upper electrode 3 c of Cu and a capacitor 3′ in a three layer structure constituted by a lower electrode 3 ′a of Cu, a dielectric body 3 ′b of polyimide and an upper electrode 3 ′c of Cu.

An inductor element 4 is a spiral type inductor and the material thereof is Cu.

A resistor 5 is constituted by a resistance body 5 b and electrodes 5 a and 5 c. The resistance body 5 b is a compound of Ta and Ti and the electrodes 5 a and 5 c are composed of Cu.

In FIG. 8, 12 is another insulator using photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000).

Capacitor elements formed inside the organic insulator 12 are constituted by a capacitor 13 in a three layer structure constituted by a lower electrode 13 a of Cu, a dielectric body 13 b of oxide of Ta and an upper electrode 13 cof Cu and a capacitor 13′ in a three layer structure constituted by a lower electrode 13 ′a of Cu, a dielectric body 13 ′b of polyimide and an upper electrode 13 ′c of Cu.

An inductor element 14 is a spiral type inductor and the material thereof is Cu.

A resistor 15 is constituted by a resistance body 15 b and electrodes 15 a and 15 c. The resistance body 15 b is a compound of Ta and Ti and the electrodes 15 a and 15 c are composed of Cu.

In FIG. 8, the respective elements formed inside the organic insulators 2 and 12 are electrically connected via conductor portions filled in through holes 20 formed in the glass substrate so as to provide a predetermined functions.

In FIG. 8, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6. Further, 8 is another metal terminal portion used for connection with a semiconductor element.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 8 will be explained.

A sand blast use film resist (product of Tokyo Ohka, Odale) of 100 μm was laminated on the glass substrate having thickness of 0.5 mm through exposure and development process and an etching use resist was formed. Subsequently, through holes were formed in the glass substrate with micro sand blasting method. Then, the resist film was peeled off, electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed on the surface of the glass substrate and walls of the via holes with sputtering method. Thereafter, on the Cu film a plating use film resist (product of Hitachi Chemical Co., Ltd., HN 920) was laminated and a resist mask was formed through exposure and development, then, conductive layers were formed inside the via holes by Cu electrolytic plating. Subsequently, the resist and the electrolytic plating seed film were peeled off.

A Cr film of 50 nm was formed on the main surface of a glass substrate sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance a covering portion of the polyimide was opened inside from the scribe area by 80 μm used for cutting into pieces as the semiconductor connection substrates. The polyimide was hardened at 250° C./2 hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrode, electrodes for the resistors and the inductor element were formed.

On the plane where the upper electrode, the electrodes for the resistor and the inductor element were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for forming solder balls was formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

A Cr film of 50 nm was formed on the back surface of the glass substrate with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance the polyimide having an opening is hardened at 250° C./2 hours under nitrogen atmosphere and the organic insulator of 10 μm was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was. removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrode, electrodes for the resistors and the inductor element were formed.

On the plane where the upper electrode, the electrodes for the resistor and the inductor element were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

In order to form the metal terminal portion on the organic insulator surface the electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated and prebaked, thereafter, a resist mask for plating was formed through exposure and development then, a plating film of 10 μm was formed by Cu electrolytic plating and further, an electrolytic nickel plating film of 2 μm was formed. Finally, after peeling off the resist and the electrolytic plating seed film, the wirings and the metal terminal portions were formed.

On the plane where the metal terminal portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

In the present embodiment, through the use of the inorganic material having a high dielectric constant such as the oxide of Ta as well as the organic material having a low dielectric constant such as the polyimide as the dielectric body material, capacitors having a small capacitance can be formed accurately, which enhances reliability of the circuits and expands available capacitance range. Further, through the use of the same material for the dielectric body as the insulator material which covers the circumference of the elements, the semiconductor connection substrate can be manufactured in further simplified and low cost processes in addition to the advantages obtained in embodiment 8.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Further, through the use of the photosensitive glass substrate as used in embodiment 9 a low cost semiconductor connection substrate having further high integration degree can be of course obtained.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 8 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 11)

FIG. 9 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 9, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 9, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd.,HD-6000) is used therefor.

Capacitor elements formed inside the organic insulator 2 are constituted by a capacitor 3 in a three layer structure constituted by a lower electrode 3 a of Cu, a dielectric body 3 b of oxide of Ta and an upper electrode 3 c of Cu and a capacitor 3′ in a three layer structure constituted by a lower electrode 3 ′a of Cu, a dielectric body 3 ′b of polyimide and an upper electrode 3 ′c of Cu.

In FIG. 9, 12 is another insulator using photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000).

An inductor element 14 is a spiral type inductor and the material thereof is Cu.

A resistor 15 is constituted by a resistance body 15 b and electrodes 15 a and 15 c. The resistance body 15 b is a compound of Ta and Ti and the electrodes 15 a and 15 c are composed of Cu.

In FIG. 9, the respective elements formed inside the organic insulators 2 and 12 are electrically connected via conductor portions filled in through holes 20 formed in the glass substrate so as to provide a predetermined functions.

In FIG. 9, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6. Further, 8 is another Metal terminal portion used for connection with a semiconductor element.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 9 will be explained.

A sand blast use film resist (product of Tokyo Ohka, Odale) of 100 μm was laminated on the glass substrate having thickness of 0.5 mm through exposure and development process and an etching use resist was formed. Subsequently, through holes were formed in the glass substrate with micro sand blasting method. Then, the resist film was peeled off, electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed on the surface of the glass substrate and walls of the via holes with sputtering method. Thereafter, on the Cu film a plating use film resist (product of Hitachi Chemical Co., Ltd., HN 920) was laminated and a resist mask was formed through exposure and development, then, conductive layers were formed inside the via holes by Cu electrolytic plating. Subsequently, the resist and the electrolytic plating seed film were peeled off.

A Cr film of 50 nm was formed on the main surface of a glass substrate sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance a covering portion of the polyimide was opened inside from the scribe area by 80 μm used for cutting into pieces as the semiconductor connection substrates. The polyimide was hardened at 250° C./2hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrodes were formed.

On the plane where the upper electrodes were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming solder balls were formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

Then, on the back face of the glass substrate a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the electrodes for the resistors and the inductor element were formed.

On the plane where the electrodes for the resistor and the inductor element were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour under nitrogen atmosphere and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

In order to form the metal terminal portion on the organic insulator surface the electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated and prebaked, thereafter, a resist mask for plating was formed through exposure and development then, a plating film of 10 μm was formed by Cu electrolytic plating and further, an electrolytic nickel plating film of 2 μm was formed. Finally, after peeling off the resist and the electrolytic plating seed film, the wirings and the metal terminal portions were formed.

On the plane where the metal terminal portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed. In this instance the polyimide having an opening is hardened at 250° C./1 hour and the organic insulator was formed so that the polyimide covering portion comes inside by 80 μm from the scribe area used for cutting into pieces as the semiconductor connection substrates.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

In the present embodiment, as will be apparent from the above, since the respective elements are arranged oh different faces, a possible influence of coupling between the respective elements can be reduced, thereby, the parasitic capacitance can be suppressed small and self oscillation frequencies of the respective elements can be increased, thus, in addition to the advantages obtained in embodiment 8 a high performance semiconductor connection substrate can be obtained.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Further, through the use of the photosensitive glass substrate as used in embodiment 9 a low cost semiconductor connection substrate having further high integration degree can be of course obtained.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 9 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 12)

FIG. 10 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 10, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 10, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000) is used therefor.

Capacitor elements formed inside the organic insulator 2 are constituted by a capacitor 3 in a three layer structure constituted by a lower electrode 3 a of Cu, a dielectric body 3 b of oxide of Ta and an upper electrode 3 c of Cu and a capacitor 3′ in a three layer structure constituted by a lower electrode 3 ′a of Cu, a dielectric body 3 ′b of polyimide and an upper electrode 3 ′c of Cu.

An inductor element 4 is a spiral type inductor and the material thereof is Cu.

A resistor 5 is constituted by a resistance body 5 b and electrodes 5 a and 5 c. The resistance body 5 b is a compound of Ta and Ti and the electrodes 5 a and 5 c are composed of Cu.

In FIG. 10, 12 is another insulator using photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000).

Capacitor elements formed inside the organic insulator 12 are constituted by a capacitor 13 in a three layer structure constituted by a lower electrode 13 a of Cu, a dielectric body 13 b of oxide of Ta and an upper electrode 13 c of Cu and a capacitor 13′ in a three layer structure constituted by a lower electrode 13 ′a of Cu, a dielectric body 13 ′b of polyimide and an upper electrode 13 ′c of Cu.

An inductor element 14 is a spiral type inductor and the material thereof is Cu.

A resistor 15 is constituted by a resistance body 15 b and electrodes 15 a and 15 c. The resistance body 15 b is a compound of Ta and Ti and the electrodes 15 a and 15 c are composed of Cu.

In FIG. 10, the respective elements formed inside the organic insulators 2 and 12 are electrically connected via conductor portions filled in through holes 20 formed in the glass substrate so as to provide a predetermined functions.

In FIG. 10, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6. Further, 8 is another Metal terminal portion used for connection with a semiconductor element.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 10 will be explained.

A sand blast use film resist (product of Tokyo Ohka, Odale) of 100 μm was laminated on the glass substrate having thickness of 0.5 mm through exposure and development process and an etching use resist was formed. Subsequently, through holes were formed in the glass substrate with micro sand blasting method. Then, the resist film was peeled off, electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed on the surface of the glass substrate and walls of the via holes with sputtering method. Thereafter, on the Cu film a plating use film resist (product of Hitachi Chemical Co., Ltd., HN 920) was laminated and a resist mask was formed through exposure and development, then, conductive layers were formed inside the via holes by Cu electrolytic plating. Subsequently, the resist and the electrolytic plating seed film were peeled off.

A Cr film of 50 nm was formed on the main surface of a glass substrate sputtering method and further, a Cu film of 500 nm was formed thereon which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance, the polyimide layer was opened so that the end portion of the opening was located at the inner side from the end of the lower electrode by 20 μm. The polyimide is hardened at 250° C./2 hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrodes were formed.

On the plane where the upper electrodes were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator. Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the electrodes for the resistors were formed.

On the plane where the electrodes for the resistor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the inductor elements were formed.

On the plane where the inductor elements were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the same, the polyimide was hardened at 250° C./1 hour to form the organic insulator.

A Cr film of 50 nm was formed on the back surface of a glass substrate sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance, the polyimide layer was opened so that the end portion of the opening was located at the inner side from the end of the lower electrode by 20 μm. The polyimide is hardened at 250° C./2 hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrodes were formed.

On the plane where the upper electrodes were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator. Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the electrodes for the resistors were formed.

On the plane where the electrodes for the resistor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series, Cr seed film was removed and the inductor elements, the wirings and the metal terminal portions were formed.

On the plane where the inductor elements, the wirings and the metal terminal portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

In the present embodiment, since the capacitor elements, inductor elements and resistor elements are respectively arranged at a plurality of different distances from the surface of the glass substrate, the respective elements can be integrated in further high density, therefore, a further small sized semiconductor connection substrate can be obtained in addition to the advantages obtained in embodiment 8.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Further, through the use of the photosensitive glass substrate as used in embodiment 9 a low cost semiconductor connection substrate having further high integration degree can be of course obtained.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 10 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

(Embodiment 13)

FIG. 11 is a cross sectional view of a semiconductor connection substrate representing one embodiment of the present invention. In FIG. 11, 1 is a glass substrate (product of Nippon Electric Glass Co., Ltd., BLC), and the thickness of which is 0.5 mm.

In FIG. 11, 2 is an organic insulator and photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000) is used therefor.

Capacitor elements formed inside the organic insulator 2 are constituted by a capacitor 3 in a three layer structure constituted by a lower electrode 3 a of Cu, a dielectric body 3 b of oxide of Ta and an upper electrode 3 c of Cu and a capacitor 3′ in a three layer structure constituted by a lower electrode 3 ′a of Cu, a dielectric body 3 ′b of polyimide and an upper electrode 3 ′c of Cu. Further, on the upper electrode connecting portions 9 for connecting with upper wirings are provided.

An inductor element 4 is a spiral type inductor and the material thereof is Cu.

A resistor 5 is constituted by a resistance body 5 b and electrodes 5 a and 5 c. The resistance body 5 b is a compound of Ta and Ti and the electrodes 5 a and 5 c are composed of Cu.

In FIG. 11, 8 is a metal terminal portion used for connection with external portions.

In FIG. 11, 12 is another insulator using photosensitive polyimide (product of Hitachi Chemical Co., Ltd., HD-6000).

Capacitor elements formed inside the organic insulator 12 are constituted by a capacitor 13 in a three layer structure constituted by a lower electrode 13 a of Cu, a dielectric body 13 b of oxide of Ta and an upper electrode 13 c of Cu and a capacitor 13′ in a three layer structure constituted by a lower electrode 13 ′a of Cu, a dielectric body 13 ′b of polyimide and an upper electrode 13 ′c of Cu.

An inductor element 14 is a spiral type inductor and the material thereof is Cu.

A resistor 15 is constituted by a resistance body 15 b and electrodes 15 a and 15 c. The resistance body 15 b is a compound of Ta and Ti and the electrodes 15 a and 15 c are composed of Cu.

In FIG. 11, the respective elements formed inside the organic insulators 2 and 12 are electrically connected via conductor portions filled in through holes 20 formed in the glass substrate so as to provide a predetermined functions. In the semiconductor connection substrate as shown in FIG. 11, an organic insulator 10 having a function of buffering stress is provided. For the organic insulator having the stress buffering function, a liquid polyimide material in which polyimide fine particles are dispersed (product of Hitachi Chemical Co., Ltd., GH-P500) was used.

In FIG. 11, 6 is a metal terminal portion used for connection with a mounting substrate such as a print substrate and in the drawing a solder ball 7 is mounted on the metal terminal portion 6.

The manufacturing method of the semiconductor connection substrate as shown in FIG. 11 will be explained.

A sand blast use film resist (product of Tokyo Ohka, Odale) of 100 μm was laminated on the glass substrate having thickness of 0.5 mm through exposure and development process and an etching use resist was formed. Subsequently, through holes were formed in the glass substrate with micro sand blasting method. Then, the resist film was peeled off, electrolytic plating use seed films Cr:50 nm, Cu:500 nm were formed on the surface of the glass substrate and walls of the via holes with sputtering method. Thereafter, on the Cu film a plating use film resist (product of Hitachi Chemical Co., Ltd., HN 920) was laminated and a resist mask was formed through exposure and development, then, conductive layers were formed inside the via holes by Cu electrolytic plating. Subsequently, the resist and the electrolytic plating seed film were peeled off.

A Cr film of 50 nm was formed on the main surface of a glass substrate sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance, the polyimide layer was opened so that the end portion of the opening was located at the inner side from the end of the lower electrode by 20 μm. The polyimide is hardened at 250° C./2 hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrodes were formed.

On the plane where the upper electrodes were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator. Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the electrodes for the resistors were formed.

On the plane where the electrodes for the resistor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the inductor elements were formed.

On the plane where the inductor elements were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the same, the polyimide was hardened at 250° C./1 hour to form the organic insulator.

A Cr film of 50 nm was formed on the back surface of a glass substrate sputtering method and further, a Cu film of 500 nm was formed thereon, which was used for current feeding use seed film for Cu plating. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the lower electrode was formed.

Subsequently, as a barrier film, a Cr film of 50 nm is formed with sputtering method. Then, Ta2O5 film having thickness of 500 nm was formed on the lower electrode by sputtering method. On the Ta2O5 film positive type liquid resist OFPR800, 500 cp (product of Tokyo Ohka) was coated and after performing drying, exposing and developing process a resist mask for a dielectric layer was formed. Subsequently, dry etch was performed by making use of CF4 to remove unnecessary portion thereof and further, unnecessary portion of the barrier layer was removed with Cr etching liquid of permanganic acid, then, the resist mask was removed and the dielectric layer was formed.

Subsequently, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the dielectric layer over the lower electrode was exposed. In this instance, the polyimide layer was opened so that the end portion of the opening was located at the inner side from the end of the lower electrode by 20 μm. The polyimide is hardened at 250° C./2 hours under nitrogen atmosphere to form the organic insulator of 10 μm.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the upper electrodes were formed.

On the plane where the upper electrodes were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator. Then, a TaN film of 500 nm was formed with sputtering method. On the film positive type liquid state resist OFPR 800, 100 cp was spin-coated and prebaked, thereafter, a resist pattern mask was formed through exposure and development. By using the mask The TaN film was dry etched with CF4. Then, a plurality of resistor elements were formed by peeling off the resist.

A Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the electrodes for the resistors were formed.

On the plane where the electrodes for the resistor were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portion for interlayer connection was formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the wirings and the metal terminal portions were formed.

Thereafter, the liquid polyimide material GH-P 500 in which polyimide fine particles are dispersed (product of Hitachi Chemical Co., Ltd.) was print coated by using a mask, heated on a hot plate at 200° C./25 min and hardened in a constant temperature bath at 250° C./60 min to form the organic insulator having stress buffering function.

Subsequently, a Cr film of 50 nm was formed with sputtering method and further, a Cu film of 500 nm was formed thereon, which was used as a seed film. On the Cu film negative type liquid state resist PMER-N-CA1000 (product of Tokyo Ohka) was spin-coated, after prebaking the same with a hot plate, a resist mask was formed through exposure and development steps. At the resist opening portions electrolytic copper plating of 10 μm was performed with current density of 1 A/dm. Subsequently, the resist mask was removed and the copper seed film was removed with copper etching liquid Cobra etch (product of Ebara Densan). Further, by making use of Cr etching liquid of permanganic acid series Cr seed film was removed and the wirings and the metal terminal portions were formed.

On the plane where the wirings and the metal terminal portions were formed, photosensitive polyimide HD 6000 (product of Hitachi Chemical Co., Ltd.) was coated by spin coating and after prebaking with a hot plate, through exposing and developing process the opening portions for forming the solder balls were formed and the polyimide was hardened at 250° C./1 hour to form the organic insulator.

After applying electroless gold plating on the surface of the metal terminal portion and then coating solder flux on a predetermined portion with a metal mask, the external electrodes were formed by arranging the lead free solder balls having a diameter of 200 μm and performing reflow processing.

Finally, the product was separated by a dicing machine to form the semiconductor connection substrates.

In the present embodiment, since the organic insulator having stress buffering function is formed immediately below the metal terminal portion 9, when being connected to a mounting substrate such as a print substrate, a thermal stress applied to the metal terminal portion 9 and the solder ball 10 due to difference of thermal expansion coefficients between the semiconductor connection substrate and the mounting substrate can be relaxed. Thereby, a semiconductor connection substrate having excellent heart resistance cycle can be obtained in addition to the advantages obtained in embodiment 12.

Further, the organic insulator having stress buffering function may be formed immediately below the metal terminal portion 8.

Further, through the use of the glass used in embodiment 2, the semiconductor connection substrate of course shows a high reliability such as in connection with impact resistance.

Further, through the use of the photosensitive glass substrate as used in embodiment 9 a low cost semiconductor connection substrate having further high integration degree can be of course obtained.

Through the use of BCB organic insulator used in embodiment 3 for the organic insulator in the present embodiment, the conductive loss and dielectric loss are reduced, thereby, a semiconductor connection substrate having a small signal transmission loss can be obtained.

Further, by using the low dielectric loss tangent resin composition as used in embodiment 4 as the insulator layer, the conductive loss and dielectric loss are reduced, thereby, loss of signals transmitting through the electronic circuits can be reduced with the low cost material.

Further, FIG. 11 structure is one embodiment of the present invention, and the arrangement of the respective elements is not limited to that shown.

In the followings, other embodiments of the present invention will be explained.

In a semiconductor connection substrate for connecting semiconductors to a mounting substrate such as a print substrate, through provision of (1) a glass substrate, (2) one or a plurality of elements selected from a capacitor element, an inductor element and resistor element each provided on the glass substrate, (3) a metal wiring provided on the glass substrate for connecting the elements, (4) a metal terminal portion which is a part of the metal wiring provided on the glass substrate and (5) an organic insulator which covers the elements and the circumference of the metal wiring portion except for the metal terminal portion, a semiconductor connection substrate which permits to integrate a variety of electronic parts such as a capacitor, inductor and resistor in a high performance and in a high density can be obtained.

In a semiconductor connection substrate for connecting semiconductors to a mounting substrate such as a print substrate, through provision of (1) a glass substrate at predetermined positions of which through holes are provided, (2) one or a plurality of elements selected from a capacitor element, an inductor element and resistor element each provided on one or both sides of the glass substrate, (3) a metal wiring provided on both sides of the glass substrate for connecting the elements, (4) conductive portions formed inside the through holes for electrically connecting the metal wiring, (5) a metal terminal portion which is a part of the metal wiring provided on one or both of the glass substrate and (6) an organic insulator which covers the elements and the circumference of the metal wiring portion except for the metal terminal portion, a semiconductor connection substrate which permits to integrate a variety of electronic parts such as a capacitor, inductor and resistor in a high performance and in a high density can be obtained.

By forming one or the plurality of elements selected from the capacitor elements, inductor elements and resistor elements, the metal wiring, the metal terminal portion and the organic insulator at the inside from the end portion of the glass substrate, the structural portions where stresses concentratedly applied at the time of cutting out the semiconductor connection substrate and at the time of mounting the same are designed to withstand the stresses and a possible damage on the semiconductor connection substrate due to the applied stresses can be greatly reduced, thereby, a highly reliable semiconductor connection substrate of a desirable manufacturing yield which permits to integrate a variety of electronic parts such as a capacitor, inductor and resistor in a high performance and in a high density can be obtained.

Since the glass substrate is constituted by a glass containing at least one rare earth element selected among the group including Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu,the strength of the glass substrate is enhanced and a highly reliable semiconductor connection substrate can be obtained.

Since the organic insulator is polyimide resin, a highly reliable semiconductor connection substrate can be obtained because of high thermal stability of polyimide.

Since the organic insulator is BCB(benzo cyclo butene), a further high performance and high efficiency semiconductor connection substrate can be obtained because of low dielectric constant and dielectric loss tangent. Since the organic insulator is constituted by a low dielectric loss tangent resin composition which includes a bridging component having a plurality of styrene groups as expressed by the above referred to general chemical formula and contains polymers having average molecular weight of more than 5000, a further high performance and high efficiency semiconductor connection substrate can be obtained with a low cost because of the low cost property, low dielectric constant and low dielectric loss tangent of the low dielectric loss tangent resin compositions. Since the capacitor elements are constituted by one or more of capacitor elements having a structure in which an inorganic dielectric material is sandwiched by two metal electrodes and one or more capacitor elements having a structure in which an organic dielectric material is sandwiched by two electrodes, through a proper use of dielectric materials of organic or inorganic or both, a small sized semiconductor connection substrate of a high performance and a high integration degree can be obtained. Since the inorganic dielectric material is an oxide of any of Ta, Mg and Sr and the organic dielectric material is polyimide, a highly reliable and high performance semiconductor connection substrate of low cost can be obtained because of low cost and high stability property of Ta, Mg and Sr and of high thermal stability of polyimide. Since the inorganic dielectric material is an oxide of any of Ta, Mg and Sr and the organic dielectric material is BCB(Benzo Cyclo Butene), a highly reliable and high performance semiconductor connection substrate of low cost can be obtained because of low cost and high stability property of Ta, Mg and Sr and of low dielectric constant and dielectric loss tangent of BCB.

Since the inorganic dielectric material is an oxide of any of Ta, Mg and Sr and the organic dielectric material is a low dielectric loss tangent resin composition which includes a bridging component having a plurality of styrene groups as expressed by the above referred to general chemical formula and contains polymers having average molecular weight of more than 5000, a highly reliable and high performance semiconductor connection substrate of low cost can be obtained because of low cost and high stability property of Ta, Mg and Sr and of low dielectric constant and dielectric loss tangent of the low dielectric loss tangent resin composition of low cost.

Since the end portion of the metal electrode of the capacitor element at the side of the glass substrate is covered by an insulator other than the dielectric insulator, a short circuiting between the electrodes and reduction of dielectric strength are prevented and a highly reliable capacitor element with a low defective rate can be provided without reducing design freedom, thus, a low defective rate and highly reliable semiconductor connection substrate having a plurality of built-in capacitor elements can be obtained.Since the capacitor elements, inductor elements and resistor elements are arranged at a plurality of different distances from the surface of the glass substrate where the respective elements are arranged, the respective elements are arranged on different planes, thereby, the respective elements are integrated in a further high density and a further small sized semiconductor connection substrate can be obtained.

Since the glass substrate is a photosensitive glass, a glass substrate in which through holes having a small diameter aperture are formed in a high density can be obtained with a low cost and a simplified process, thereby, the size of the semiconductor connection substrate can be further reduced.

Since the following relationship between the two opening diameters R1 and R2 (R1≧R2) of the through holes and the thickness t of the glass substrate is satisfied; 70≦ . . . tan−1(t/(R 1−R 2))≦. . . 80 a further small size semiconductor connection substrate can be obtained, because the circuits are integrated in a further high density.

Since any of the capacitor elements, inductor elements and resistor elements are arranged on one face of the glass substrate and the remaining elements are arranged on the other face of the substrate, a possible influence between the respective elements can be reduced and the self oscillation frequencies of the elements can be increased because of reduced parasitic capacitance.

Since the capacitor elements, inductor elements and resistor elements are arranged at a plurality of different distances from the surface of the glass substrate where the respective elements are arranged, the respective elements are arranged on different planes, thereby, the respective elements are integrated in a further high density and a further small sized semiconductor connection substrate can be obtained. Through the use of the semiconductor connection substrate a high performance, highly reliable and small sized wireless terminal device of low cost can be obtained. Through the use of the semiconductor connection substrate a high performance, highly reliable and small sized wireless base station device of low cost can be obtained. Through the use of the semiconductor connection substrate a high performance, highly reliable and small sized wireless measurement device of low cost can be obtained.

With the above embodiments, a highly reliable semiconductor connection substrate which permits to integrate a variety of electronic parts such as capacitors, inductors and resistors in a high performance and high density with a desirable manufacturing yield can be provided. 

1. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate; a plurality of electrodes having different areas provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; a metal terminal portion of the metal wiring; and an organic insulator material covering the one or more elements and a circumference of the metal wiring portion, excluding the metal terminal portion.
 2. The semiconductor connection substrate of claim 1, wherein the mounting substrate is a printed substrate.
 3. A semiconductor connection substrate according to claim 1, wherein the distances between the electrodes in the capacitor element, the inductor element and the resistor element with respect to the insulator substrate are differentiated.
 4. A semiconductor connection substrate according to claim 1, wherein the insulator substrate is a glass substrate.
 5. A semiconductor connection substrate according to claim 1, wherein the organic insulator material is a photosensitive organic insulator material.
 6. A semiconductor connection substrate according to claim 1, wherein the organic insulator material is a low dielectric loss tangent resin composition which includes a bridging component having a plurality of styrene groups as expressed by the following chemical formula, and contains polymers having average molecular weight of more than 5000,

wherein, R represents a hydrocarbon skeleton, which optionally includes a substituent, R1 represents one of hydrogen, methyl and ethyl, m is 1 to 4 and n is an integer greater than
 1. 7. A semiconductor connection substrate according to claim 1, wherein the organic insulator material is polyimide.
 8. A semiconductor connection substrate according to claim 1, wherein the organic insulator material is BCB(Benzo Cyclo Butene).
 9. A semiconductor connection substrate according to claim 1, wherein the dielectric material is an organic insulator material or an oxide of Ta, Mg or Sr.
 10. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate; a plurality of electrodes provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a connecting portion provide at portions other than end portions of the electrodes; a metal wiring connecting the one or more elements and the connecting portion; a metal terminal portion of the metal wiring; and an organic insulator material covering the one or more elements and a circumference of the metal wiring, excluding the metal terminal portion.
 11. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate; a plurality of electrodes provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and resistor element; a metal wiring connecting the one or more elements; a metal terminal portion of the metal wiring, wherein the metal terminal portion is arranged in a grid shape; and an organic insulator material covering the one or more elements and a circumference of the metal wiring, excluding the metal terminal portion.
 12. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate; a plurality of electrodes provided on the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; a metal terminal portion of the metal wiring; and a plurality of organic insulator materials covering the one or more elements and the circumference of the metal wiring, excluding the metal terminal portion.
 13. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate having through holes at predetermined positions; a plurality of electrodes having different areas provided on at least one face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; at least one conductor portion formed inside the through holes for electrically connecting the metal wiring; a metal terminal portion of the metal wiring; and an organic insulator material covering the one or more elements and a circumference of the metal wiring portion, excluding the metal terminal portion.
 14. A semiconductor connection substrate according to claim 13, wherein the distances between the electrodes in the capacitor element, the inductor element and the resistor element with respect to the insulator substrate are differentiated.
 15. A semiconductor connection substrate according claim 13, wherein the insulator substrate is a glass substrate.
 16. A semiconductor connection substrate according to claim 13, wherein the organic insulator material is a photosensitive organic insulator material.
 17. A semiconductor connection substrate according to claim 13, wherein the organic insulator material is a low dielectric loss tangent resin composition which includes a bridging component having a plurality of styrene groups as expressed by the following chemical formula and contains polymers having average molecular weight of more than 5000,

wherein R represents a hydrocarbon skeleton, which optionally includes a substituent, R1 represents one of hydrogen, methyl and ethyl, m is 1 to 4 and n is an integer greater than 1).
 18. A semiconductor connection substrate according to claim 13, wherein the organic insulator material is polyimide.
 19. A semiconductor connection substrate according to claim 13, wherein the organic insulator material is BCB(Benzo Cyclo Butene).
 20. A semiconductor connection substrate according to claim 13, wherein the dielectric material is an organic insulator material or an oxide of any one of Ta, Mg and Sr.
 21. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate having through holes at predetermined positions; a plurality of electrodes having different areas provided on at least one face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; connecting portions provided at portions other than end portions of the electrodes; a metal wiring connecting the elements and the connecting portions; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal portion of the metal wiring; and an organic insulator material covering the one or more elements and a circumference of the metal wiring, excluding the metal terminal portion.
 22. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate having through holes at predetermined positions; a plurality of electrodes having different areas provided on at least one face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal portion of the metal wiring, wherein the metal terminal portion is arranged in a grid shape; and an organic insulator material covering the one or more elements and a circumference of the metal wiring, excluding the metal terminal portion.
 23. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on at least one face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal portion of the metal wiring; and a plurality of organic insulator materials covering the one or more elements and a circumference of the metal wiring, excluding the metal terminal portion.
 24. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on at least one face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal portion of the metal wiring; a first organic insulator material covering elements provided on a main face of the insulator substrate and a circumference of the metal wiring, excluding the metal terminal portion; and a second organic insulator material covering elements provided on a sub-main face of the insulator substrate and a circumference of the metal wiring, excluding the metal terminal portion.
 25. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on at least one face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; conductor portions formed inside the through holes for electrically connecting the metal wiring; a metal terminal portion of the metal wiring provided on a face other than a face where an inductor element is provided; and an organic insulator material covering the one or more elements and a circumference of the metal wiring, excluding the metal terminal portion.
 26. A semiconductor connection substrate which connects a semiconductor element to a mounting substrate comprising: an insulator substrate having through holes at predetermined positions; a plurality of electrodes provided on at least one face of the insulator substrate; one or more elements selected from a capacitor element of dielectric material sandwiched between the electrodes, an inductor element and a resistor element; a metal wiring connecting the one or more elements; conductor portions constituted of a conductive material, core forming material and glass, wherein the conductor portions are formed inside the through holes for electrically connecting the metal wiring; a metal terminal portion of the metal wiring; and an organic insulator material covering the one or more elements and a circumference of the metal wiring, excluding the metal terminal portion. 